A060076 Fourth column of triangle A060074.

1, 30, 1211, 68060, 5162421, 510964090, 64108947631, 9954077496120, 1874917179220841, 421327494210872150, 111374995513203846051, 34217341079365673500180, 12091183195611248756287261

Offset

0,2

Comments

Also fourth diagonal of triangle A060058.

a(n) is n-fold iterated sum of squares with last upper summation index 4 and other upper summation indices j[k]+1, k=2,...,n. See Comments A060061 for the threefold iteration with last upper summation index n.

Links

Table of n, a(n) for n=0..12.

Formula

a(n)=A060074(n+3, 3)= A060058(3+n, n).

Crossrefs

Sequence in context: A259462 A269682 A269471 * A174716 A163521 A273416

Adjacent sequences: A060073 A060074 A060075 * A060077 A060078 A060079

Keyword

nonn,easy

Author

Wolfdieter Lang, Mar 16 2001

Status

approved