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

1,2

Comments

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

Links

Table of n, a(n) for n=1..24.

Index entries for sequences related to primorial base

Index entries for sequences related to primorial numbers

Example

See examples in A369649.

Prog

(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, ", ")));

Crossrefs

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

Cf. also A369647.

Sequence in context: A287453 A287449 A287688 * A221847 A283766 A047216

Adjacent sequences: A369645 A369646 A369647 * A369649 A369650 A369651

Keyword

nonn,hard,more

Author

Antti Karttunen, Feb 03 2024

Status

approved