A272079 Row sums of A238453.

1, 2, 3, 6, 10, 26, 30, 86, 154, 350, 514, 1542, 1930, 5882, 9086, 16242, 30098, 93474, 116174, 368318, 547218, 1050842, 1813030, 5703414, 7256850, 19610282, 33509306, 77004470, 122302250, 393465466, 399187282, 1302847262, 2380228834, 4947581482, 8604927394

Offset

0,2

Links

Table of n, a(n) for n=0..34.

Tom Edgar, Totienomial Coefficients, INTEGERS, 14 (2014), #A62.

Prog

(Sage) P=[euler_phi(i) for i in [0..100]]
Tr=[[prod(P[1:n+1])/(prod(P[1:k+1])*prod(P[1:(n-k)+1])) for k in [0..n]] for n in [0..len(P)-1]]
print([sum(x) for x in Tr])

Crossrefs

Cf. A000010, A238453.

Sequence in context: A123256 A111275 A298537 * A212606 A192440 A327711

Adjacent sequences: A272076 A272077 A272078 * A272080 A272081 A272082

Keyword

nonn

Author

Tom Edgar, Apr 19 2016

Status

approved