A328635 Numbers n for which A328578(n) = A257993(A276086(A276086(n))) = 5.

10, 14, 38, 58, 62, 112, 166, 176, 214, 218, 226, 240, 360, 650, 658, 660, 780, 844, 848, 856, 1080, 1200, 1280, 1288, 1474, 1478, 1486, 1500, 1620, 1910, 1918, 1920, 2040, 2104, 2108, 2116, 2312, 2314, 2318, 2386, 2396, 2440, 2450, 2504, 2520, 2546, 2580, 2700, 2732, 2744, 2752, 2950, 3000, 3120, 3176, 3362, 3374, 3382, 3420

Offset: 1

Author

Antti Karttunen, Oct 27 2019

Keywords

• nonn

Comments

Numbers n for which A276087(n) is a multiple of 210, but not of 11.

Links

• Antti Karttunen, Table of n, a(n) for n = 1..10000
• Index entries for sequences related to primorial base

Crossrefs

Row 5 of A328631.

Cf. A257993, A276086, A328578.

Programs

PARI

A257993(n) = { for(i=1,oo,if(n%prime(i),return(i))); }
A276086(n) = { my(m=1, p=2); while(n, m *= (p^(n%p)); n = n\p; p = nextprime(1+p)); (m); };
A328578(n) = A257993(A276086(A276086(n)));
isA328635(n) = (5==A328578(n));