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A196939 a(n) is the prime order number of A196938. 0
7, 10, 19, 20, 24, 25, 26, 32, 38, 39, 40, 43, 44, 45, 47, 51, 53, 55, 56, 57, 61, 63, 65, 66, 68, 69, 74, 81, 84, 86, 87, 88, 89, 90, 91, 92, 94, 96, 97, 98, 99, 101, 106, 109, 110, 111, 113, 114, 115, 116, 117, 123, 124, 125, 129, 130, 131, 132, 134, 135 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..60.

EXAMPLE

A196938(1) = 17, which is the 7th prime, so a(1) = 7

MATHEMATICA

i = 1; Table[While[i++; p = Prime[i]; found = 0; j = 0; While[j++; df = 6*j; (p > (2*df)) && (found == 0), cp1 = p - 2*df; cp2 = p - df; cp3 = p + df; cp4 = p + 2*df; If[(PrimeQ[cp1]) && (PrimeQ[cp2]) && (PrimeQ[cp3]) && (PrimeQ[cp4]), found = 1]]; found == 0]; i, {ct, 1, 60}]

CROSSREFS

Cf. A196938.

Sequence in context: A124187 A155027 A118420 * A038211 A122226 A240791

Adjacent sequences:  A196936 A196937 A196938 * A196940 A196941 A196942

KEYWORD

nonn,easy

AUTHOR

Lei Zhou, Oct 07 2011

STATUS

approved

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Last modified August 20 03:33 EDT 2019. Contains 326139 sequences. (Running on oeis4.)