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A048199
Distance of primes to next odd multiple of 5 (where n mod 10 = 5),
1
3, 2, 0, 8, 4, 2, 8, 6, 2, 6, 4, 8, 4, 2, 8, 2, 6, 4, 8, 4, 2, 6, 2, 6, 8, 4, 2, 8, 6, 2, 8, 4, 8, 6, 6, 4, 8, 2, 8, 2, 6, 4, 4, 2, 8, 6, 4, 2, 8, 6, 2, 6, 4, 4, 8, 2, 6, 4, 8, 4, 2, 2, 8, 4, 2, 8, 4, 8, 8, 6, 2, 6, 8, 2, 6, 2, 6, 8, 4, 6, 6, 4, 4, 2, 6, 2, 6, 8, 4, 2, 8, 6, 8, 4, 6, 2, 6, 4, 2, 4, 8, 8, 2, 6, 4
OFFSET
1,1
EXAMPLE
Take first prime 2, subtract from 5: 5-2=3, distance to 5; take 5-5 = 0; or 4th term, 15-7=8. Sequence may be converted to distance to nearest value of n (absolute value, where n mod 10 = 5) by changing all 8's to 2's and all 6's to 4's.
PROG
(PARI) a(n) = {p = prime(n); k = 0; while ((p+k) % 10 != 5, k++); k; } \\ Michel Marcus, Aug 25 2013
CROSSREFS
Sequence in context: A173787 A116191 A257303 * A335998 A152441 A248181
KEYWORD
easy,nonn
AUTHOR
STATUS
approved