1819125domain: NAppears in sequencesTriangular array read by rows. Row n lists the coefficients of the closed form of hypergeometric([1/2, -n/2, (1-n)/2], [], 4*z).at n=37A246256Diagonal in triangle A291560: a(n) = -A291560(n+1, n) for n>=1.at n=4A291561Odd coreful abundant numbers: the odd terms of A308053.at n=15A339936