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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.
Table of n, a(n) for n=0..12.
a(n)=A060074(n+3, 3)= A060058(3+n, n).
Sequence in context: A259462 A269682 A269471 * A174716 A163521 A273416
Adjacent sequences: A060073 A060074 A060075 * A060077 A060078 A060079
Wolfdieter Lang, Mar 16 2001