A279397 Row sums of triangle A279396.

1, 1, 4, 9, 25, 69, 217, 745, 2801, 11399, 49859, 232639, 1151397, 6017345, 33084489, 190780154, 1150686536, 7241926820, 47455774001, 323158817943, 2282794174761, 16700943712871, 126356690691651, 987303203599953, 7957130740261570, 66071751478724210, 564631175841553564, 4961038559732049506, 44775183035039043106

Offset

1,3

References

G. H. Hardy, Ramanujan: twelve lectures on subjects suggested by his life and work, AMS Chelsea Publishing, Providence, Rhode Island, 2002, p. 142.

Links

Table of n, a(n) for n=1..29.

Formula

a(n) = Sum_{m=1..n} A279396(n, m) =

Sum_{m=1..n} sigma^*_{n-m}(m), n >= 1, with the definition of sigma^*_k(n) given in the Hardy reference or in a comment in A279395.

Crossrefs

Cf. A279395, A279396.

Sequence in context: A133022 A184326 A217590 * A176497 A304167 A317975

Adjacent sequences: A279394 A279395 A279396 * A279398 A279399 A279400

Keyword

nonn,easy

Author

Wolfdieter Lang, Jan 10 2017

Status

approved