A083428 Smallest prime that can be formed using the digits of first 3n+1 numbers, or 0 if no such number exists.

1423, 1234657, 10123457689, 10111112233469857, 10111111112233445569867, 10111111111112233445566799887, 10011111111111122222233445567689987, 10011111111111122222222233344455566879789, 10011111111111122222222222233344455566677897889

Offset

1,1

Comments

The digits of first 3n and first 3n-1 numbers yield a composite number which is a multiple of 3. Conjecture: No entry is zero. Subsidiary sequence: the number of distinct primes that can be formed using the digits of first 3n + 1 numbers.

Links

Table of n, a(n) for n=1..9.

Crossrefs

Sequence in context: A023937 A225567 A216444 * A376793 A068572 A236897

Adjacent sequences: A083425 A083426 A083427 * A083429 A083430 A083431

Keyword

base,nonn

Author

Amarnath Murthy and Meenakshi Srikanth (menakan_s(AT)yahoo.com), Apr 29 2003

Extensions

a(4)-a(9) from Donovan Johnson, Apr 03 2008

Status

approved