<Tr> <Td> A027641 </Td> <Td> Bernoulli numbers B </Td> <Td> (1, - 1, 1, 0, - 1, 0, 1, 0, - 1, 0, 5, 0, - 691, 0, 7, 0, - 3617, 0, 43867, 0, ...) </Td> <Td> </Td> </Tr> <Tr> <Td> A031214 </Td> <Td> First elements in all OEIS sequences </Td> <Td> (1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, ...) </Td> <Td> One of sequences referring to the OEIS itself . </Td> </Tr> <Tr> <Td> A033307 </Td> <Td> Decimal expansion of Champernowne constant </Td> <Td> (1, 2, 3, 4, 5, 6, 7, 8, 9, 1, ...) </Td> <Td> Formed by concatenating the positive integers . </Td> </Tr> <Tr> <Td> A034897 </Td> <Td> Hyperperfect numbers </Td> <Td> (6, 21, 28, 301, 325, 496, 697, ...) </Td> <Td> k - hyperperfect numbers, i.e. n for which the equality n = 1 + k (σ (n) − n − 1) holds . </Td> </Tr>

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