A396349 - OEIS

%I #7 May 27 2026 22:52:02

%S 1,3,3,9,5,7,13,15,9,25,11,19,15,15,25,33,27,31,27,23,21,29,39,37,27,

%T 55,51,57,29,31,73,67,33,37,35,39,59,73,39,65,71,47,45,59,69,55,51,

%U 109,51,51,51,129,93,77,81,105,89,61,75,63,109,67,63,153,65,73,101,123,69,95

%N Antidiagonal sums of A396348.

%H Stefano Spezia, <a href="/A396349/b396349.txt">Table of n, a(n) for n = 1..10000</a>

%t A396348[n_, k_]:=Prime[n]^IntegerExponent[k, Prime[n]]; a[n_]:=Sum[A396348[k,n-k+1],{k,n}]; Array[a,70]

%Y Cf. A396348.

%K nonn,look

%O 1,2

%A _Stefano Spezia_, May 23 2026