A369648 Indices of novel terms in A351073, where A351073 is the maximal exponent in the prime factorization of the numbers that are sums of distinct primorial numbers.

1, 2, 6, 7, 10, 24, 90, 144, 766, 1040, 1164, 2122, 3010, 8914, 17838, 20500, 87472, 243252, 312058, 1118346, 1347998, 2167146, 3569780, 6038946

Offset: 1

Author

Antti Karttunen, Feb 03 2024

Keywords

• nonn
• hard
• more

Comments

Indices k at which A351073(k) for the first time attains a new distinct value.

Examples

			See examples in A369649.
		

Links

• Index entries for sequences related to primorial base
• Index entries for sequences related to primorial numbers

Crossrefs

Cf. A002110, A051903, A276156, A351073, A369649 (corresponding values of A276156).

Cf. also A369647.

Programs

PARI

A051903(n) = if((1==n),0,vecmax(factor(n)[, 2]));
A276156(n) = { my(s=0, p=1, r=1); while(n, if(n%2, s += r); n>>=1; p = nextprime(1+p); r *= p); (s); };
A351073(n) = A051903(A276156(n));
m=Map(); for(n=1,2^25,e=A351073(n);if(!mapisdefined(m,e),mapput(m,e,n);print1(n,", ")));