A079405 Number of dots in primes in Braille.

2, 2, 2, 4, 2, 3, 5, 3, 4, 4, 3, 6, 4, 5, 7, 4, 4, 4, 7, 5, 6, 6, 5, 5, 6, 5, 6, 8, 6, 4, 7, 4, 7, 5, 6, 4, 7, 6, 8, 7, 7, 5, 4, 5, 7, 5, 4, 6, 8, 6, 6, 6, 6, 5, 8, 7, 7, 7, 10, 6, 7, 6, 9, 4, 5, 7, 5, 8, 9, 7, 6, 6, 9, 8, 8, 7, 7, 8, 7, 8, 6, 6, 6, 7, 7, 8, 8, 9, 7, 8, 10, 9, 10, 6, 7, 7, 7, 5, 6, 6, 9, 8, 7, 7

Offset: 0

Author

Jon Perry, Feb 16 2003

Keywords

• nonn

Examples

			The 5th prime is 11, hence a(11)=1+1=2
		

Links

• American Foundation for the Blind, Braille Bug

Crossrefs

Cf. A079399, A072283.

Programs

PARI

{ braille=[3,1,2,2,3,2,3,4,3,2]; forprime (n=2,300, b=braille[n%10+1]; n2=n; if (n>99, b=b+braille[n\100+1]; n2=n%100); if (n2>9,b=b+braille[n2\10+1]); print1(b",")) }

PARI

{ braille=[3, 1, 2, 2, 3, 2, 3, 4, 3, 2]; forprime (n=2, 300, n2=n; b=0; while (n2>0, b=b+braille[n2%10+1]; n2=n2\10); print1(b", ")) } \\ Sean A. Irvine, Feb 04 2010

Extensions

Corrected and extended by Sean A. Irvine, Feb 04 2010