A338723 Alternating row sums in triangle A338721.

1, 3, 4, 6, 6, 9, 9, 11, 13, 14, 14, 18, 18, 18, 21, 23, 23, 25, 25, 29, 30, 30, 30, 34, 36, 36, 36, 39, 39, 43, 43, 45, 45, 45, 49, 52, 52, 52, 52, 56, 56, 60, 60, 60, 63, 63, 63, 67, 69, 71, 71, 71, 71, 75, 76, 80, 80, 80, 80, 84, 84, 84, 88, 90, 90, 93, 93

Offset

1,2

Links

Alois P. Heinz, Table of n, a(n) for n = 1..10000

Crossrefs

Cf. A338721, A338722.

Sequence in context: A033095 A158907 A338281 * A175708 A023830 A063649

Adjacent sequences: A338720 A338721 A338722 * A338724 A338725 A338726

Keyword

nonn

Author

N. J. A. Sloane, Nov 30 2020

Extensions

More terms from Alois P. Heinz, Nov 30 2020

Status

approved