A124791 Row sums of number triangle A124790.

1, 1, 1, 3, 5, 13, 29, 73, 181, 465, 1205, 3171, 8425, 22597, 61073, 166195, 454949, 1251985, 3461573, 9611191, 26787377, 74916661, 210178457, 591347989, 1668172841, 4717282753, 13369522249, 37970114703, 108045430901

Offset

0,4

Comments

Row sums of a generalized Motzkin triangle.

Apparently the Motzkin transform of A105811, after the sign of A105811(1) is negated. - R. J. Mathar, Dec 11 2008

Hankel transform is A159964. - Paul Barry, Apr 28 2009

Links

Table of n, a(n) for n=0..28.

Formula

Conjecture: (n+1)*a(n) +(-n+2)*a(n-1) +(-5*n+7)*a(n-2) +3*(-n+2)*a(n-3) = 0. - R. J. Mathar, Dec 02 2014

Crossrefs

Cf. A105811, A124790, A159964.

Sequence in context: A168314 A335562 A106666 * A147046 A233232 A144471

Adjacent sequences: A124788 A124789 A124790 * A124792 A124793 A124794

Keyword

nonn

Author

Paul Barry, Nov 07 2006

Status

approved