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A001410 Sum of rows of triangle defined in A001404. 1
1, 2, 5, 12, 28, 65, 149, 341, 777, 1769, 4022, 9140, 20763, 47156, 107086, 243162, 552128, 1253640, 2846424, 6462827, 14673824, 33316766, 75645245, 171751292, 389958283, 885393129, 2010268490 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

Also, limit to which the reflected rows of A001404 converge. - Ralf Stephan, Oct 17 2004

LINKS

Table of n, a(n) for n=0..26.

MAPLE

a[ 0, 0 ] := 1; for i from 1 to N do a[ i, 0 ] := a[ i-1, 0 ]+a[ i-1, 1 ]; for j from 1 to i do a[ i, j ] := sum(a[ i-j, t ], t=0..min(j+1, N)) od; od; b[ n ] := sum(a[ n, i ], i=0..n);

CROSSREFS

Cf. A001404.

Sequence in context: A045623 A290990 A324586 * A258898 A019486 A019485

Adjacent sequences:  A001407 A001408 A001409 * A001411 A001412 A001413

KEYWORD

nonn,easy

AUTHOR

N. J. A. Sloane.

STATUS

approved

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Last modified March 21 12:09 EDT 2019. Contains 321369 sequences. (Running on oeis4.)