A387194 Decimal expansion of J_0(Pi/2), Bessel Function of the first kind of index 0 at A019669.

4, 7, 2, 0, 0, 1, 2, 1, 5, 7, 6, 8, 2, 3, 4, 7, 6, 7, 4, 4, 7, 6, 6, 8, 3, 8, 7, 8, 7, 2, 5, 0, 0, 9, 6, 2, 3, 6, 4, 2, 4, 0, 4, 4, 8, 0, 4, 7, 6, 6, 6, 5, 8, 5, 6, 4, 5, 7, 3, 6, 4, 7, 4, 7, 7, 4, 5, 9, 4, 6, 1, 7, 6, 2, 7, 6, 2, 5, 1, 2, 7, 7, 0, 1, 5, 1, 7, 0, 4, 6, 1, 9, 8, 6, 2, 1, 6, 7, 5, 9, 4, 2, 6, 1, 1, 4, 0, 9, 5, 5, 0, 6, 0, 1, 7, 5, 0, 0

Offset: 0

Author

R. J. Mathar, Aug 21 2025

Keywords

• nonn
• cons
• easy

Examples

			J_0(Pi/2) = 0.47200121576823476744766838787250096236424044804766658...
		

Links

• Paolo Xausa, Table of n, a(n) for n = 0..10000

Crossrefs

Cf. A019669, A387193, A387195.

Programs

Mathematica

First[RealDigits[BesselJ[0, Pi/2], 10, 100]] (* Paolo Xausa, Aug 21 2025 *)