A219997 Decades whose prime pattern is same as the prime pattern in the previous decade, with at least one prime.

38, 79, 125, 140, 155, 181, 235, 277, 289, 292, 311, 332, 437, 445, 500, 533, 559, 610, 617, 625, 649, 697, 707, 718, 751, 821, 857, 874, 895, 952, 962, 974, 1048, 1073, 1100, 1115, 1189, 1271, 1310, 1348, 1352, 1357, 1367, 1384, 1415, 1420, 1430, 1448, 1474

Offset

1,1

Links

V. Raman, Table of n, a(n) for n = 1..10000

Formula

a(n) >> n log^2 n.

a(n) = A216329(n) + 1.

Prog

(PARI) for(i=2, 1500, if(isprime(10*i-9)==isprime(10*i+1)&&isprime(10*i-7)==isprime(10*i+3)&&isprime(10*i-3)==isprime(10*i+7)&&isprime(10*i-1)==isprime(10*i+9)&&isprime(10*i+1)+isprime(10*i+3)+isprime(10*i+7)+isprime(10*i+9)>=1, print1(i", ")))

Crossrefs

Cf. A190639.

Cf. A216329 (lower decade).

Sequence in context: A044485 A160846 A219999 * A039421 A043244 A044024

Adjacent sequences: A219994 A219995 A219996 * A219998 A219999 A220000

Keyword

nonn,base

Author

V. Raman, Dec 07 2012

Status

approved