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A279397 Row sums of triangle A279396. 1
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 (list; graph; refs; listen; history; text; internal format)
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

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Last modified April 20 03:36 EDT 2019. Contains 322294 sequences. (Running on oeis4.)