A279397 - OEIS

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

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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.